<template>
  <HomePanel ref="target" title="热门品牌" sub-title="国际经典 品质保证">
    <template v-slot:right>
      <a @click="curIdx=0" :class="{disabled:curIdx===0}" href="javascript:;" class="iconfont icon-angle-left prev"></a>
      <a @click="curIdx=1" :class="{disabled:curIdx===1}" href="javascript:;" class="iconfont icon-angle-right next"></a>
    </template>
    <div class="box" ref="box">
      <div v-if="brands.length">
        <ul class="list" :style="transX">
          <li v-for="brand in brands" :key="brand.id">
            <RouterLink to="/">
              <img :src="brand.picture" alt="">
            </RouterLink>
          </li>
        </ul>
      </div>
      <div class="skeleton" v-else>
       <xtxSkeleton class="item" v-for="i in 5" :key="i" bg="#e4e4e4" width="240px" height="305px" />
      </div>
    </div>
  </HomePanel>
</template>

<script>
import HomePanel from './home-panel'
import xtxSkeleton from '@/components/xtx-skeleton.vue'
import useLazyData from '@/compositions/index'
import { ref, computed } from 'vue'
import { findBrand } from '../../../api/home'
export default {
  name: 'HomeBrand',
  components: { HomePanel, xtxSkeleton },
  setup () {
    // 1.保存数据
    const brands = ref([])
    // 2.发送请求获取数据(懒加载)
    const fn = () => {
      findBrand(10).then(data => {
        console.log('findBrand2', data)
        brands.value = data.result
      })
    }
    const target = useLazyData(fn)
    // 3.点击切换分页
    const curIdx = ref(0)
    const transX = computed(() => {
      const t = -1200 * curIdx.value
      return `transform: translateX(${t}px)`
    })
    return { brands, curIdx, transX, target }
  }
}
</script>

<style scoped lang='less'>
.home-panel {
  background:#f5f5f5
}
.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: @xtxColor;
  &::before {
    font-size: 12px;
    position: relative;
    top: -2px
  }
  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}
.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;
  .list {
    width: 200%;
    display: flex;
    transition: all 1s;
    li {
      margin-right: 10px;
      width: 240px;
      &:nth-child(5n) {
        margin-right: 0;
      }
      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}
.skeleton {
  width: 100%;
  display: flex;
  .item {
    margin-right: 10px;
    &:nth-child(5n) {
      margin-right: 0;
    }
  }
}
</style>
